383 cylinder heads

[haroldbrown2]

part number 951250 or 2951250, one side had the 2 right next to it.  2.85" and 1.75" valves.  Any good to use on fairly mild 383?  worth installing hardened valve seats?  Only going to install a mild cam, like maybe a factory grind that came in the road runners, this was non-magnum 383, painted light blue, from 68 model pass car.

[Bullitt-]

I searched the 2951250 # & it shows to be for 440s an RB engine...donno if that will work on a B engine. 

http://www.mopar1.us/headcastnumber.html

[hemiken]

The heads will bolt straight on guys should work fine, not sure about your octane rating compared with ours here, not sure if harden seats would be necesary there or not depends on your compression too

[haroldbrown2]

these heads were on a supposedly low mileage 383 out of a 68 Newport and that webpage does show 68 440.  The motor was pale blue.  I guess the factory just used what was handy.  The motor also was supposedly never apart and it did still have the insulation pad under the intake I read about on here.  It also had the very tiniest Carter 4 barrel (the best and top both) I've ever seen.  I guess the heads will flow well enough to use w/mild hydraulic cam then.  I'm figuring something about like a stock road runner cam.  I'm positive this motor is 383 and not 440 because the way the block is made.

[haroldbrown2]

naturally I meant to type the Carter 4 barrel has the tiniest "BOTTOM" and top also.  I won't be able to bolt any other carb to that intake.  I figure I'll look for a used Holley Street Dominator, I've been lurking on here reading and thinking and I know I've got one on a small block Chevy and it's a great intake (on my 327) and they're reasonably priced used.

[71chally416]

Ya definately wanna dump the stock carb for either a Holley or a 800 Thunder AVS.  They used some tiny carbs on the stockers.

[Chryco Psycho]

the 250 casting is nothing special , it was used for a few months before the 906 , just an open chamber head , should have 2.08/1.74 valves , insalling hard seats is a good idea if you are going to run these haeds for a while , I would install a 1.81 exhaust with thehard seats  though .
 KEN IS CORRECT  all big block heads will bolt on any B or RB engine